Apollo 11 will probably go down in history as one of the major responses of two nations facing each other with threatening technologies - sometimes called mutually assured destruction. It was also the America's response to the apparent superiority of the Russians in putting objects into space before USA could.
Buzz AldrinOne of the major problems with long-term deep space human flight is the requirement for radiation shielding.
Buzz AldrinUnless we are able to commit to a permanent growing settlement [on Mars], then I don't think just going there with humans and coming back is worth doing. The expense of planning to come back is like the people who left Europe to come to America and then to turn around and go back to Europe, it really doesn't make any sense at all.
Buzz AldrinHaving walked on the Moon, I know something about what we need to explore, really explore, in space.
Buzz AldrinAt 10,000 feet, the 3 parachutes would come out, a little lower the pressure of the atmosphere outside was greater than inside, and we could smell the salt air and it was very encouraging to return to earth.
Buzz Aldrin